ThinkScript to NinjaScript (NT 8) conversion - Please help!

[adeelshahzad]

AddChart(high = UpH1, low = UpL1, open = UpO1, close = UpC1,
type = ChartType.CANDLE, growcolor = GlobalColor("Bull"));
AddChart(high = UpH , low = UpL , open = UpO, close = UpC,
type = ChartType.CANDLE, growcolor = GlobalColor("WeakBull"));

AddChart(high = DnH1, low = DnL1, open = DnO1, close = DnC1,
type = ChartType.CANDLE, growcolor = GlobalColor("Bear"));
AddChart(high = DnH , low = DnL , open = DnO, close = DnC,
type = ChartType.CANDLE, growcolor = GlobalColor("WeakBear"));

AddChart(high = NuH , low = NuL , open = NuO, close = NuC,
type = ChartType.CANDLE, growcolor = GlobalColor("Neutral"));​

Please help in below questions,

1. AddChart is not a method mentioned in documentation of ThinkScript and I am unable to understand why it is used?
2. Why are we calling these methods in-line and 5 times i.e. would these 5 calls to AddChart not mean we are plotting charts in the same time slot and only the last plot will be visible since last will win?

[NinjaTrader_Jesse]

Hello adeelshahzad,

I was able to find a forum post with a description of that method using google. It looks like that was used to superimpose a second chart on your main chart in ThinkOrSwim

https://usethinkscript.com/threads/addchart-how-to-superimpose-a-second-chart-on-your-main-chart-in-thinkorswim.9432/

I am unsure if that was able to do anything other than superimpose a chart in another chart or why it may have been used in what you are trying to convert.

[adeelshahzad]

Actually these 5 lines are plotting Heiken-Ashi bars on chart; overlay-ed to the actual bars.

But I am trying understand that are they doing that on close of each bar?

And what equivalent way to be used for plotting candle for Heiken-Ashi bars in NinjaScript; the one I found (from ecosystem) was custom indicator that plotted Heiken-Ashi bars inside

OnRender()

and

OnCalculateMinMax()

If that is the way I have to use then how can I call

OnRender()

and

OnCalculateMinMax()

times (like ThinkScript) on each bar close?

[NinjaTrader_Jesse]

Hello adeelshahzad,

I wouldn't be able to tell you how thinkscript processes, I don't know how that platform works to be able to say how it processes scripts.

Plotting in NinjaTrader can be done in a few ways. For simple plots like lines you can use a Plot by using AddPlot(). For custom rendering you can place the OnRender override in the script, that is the SharpDX rendering outlet. You don't need to call that method, its called automatically for render passes.

OnCalculateMinMax is not required but can be used to make a custom MAX and MIN value for the charts scale, that makes sure those values are visible in the chart.

[mcosta72]

just learned about this : https://youtu.be/dprA_LefyhQ . AI code generator for NT : https://quantwisetrading.com/coder.php , it could debug your code too

[NinjaTrader_Jesse]

Hello mcosta72,

I just wanted to provide the following disclaimer about AI services for any users who may encounter your post.

From our experience at this time, ChatGpt and other AI models are not quite adequate to generate valid compilable NinjaScripts that function as the user has intentioned. We often find that the generated code will call non-existent properties and methods, use improper classes or inheritance, and may have incorrect logic. We highly encourage that you create a new NinjaScript yourself using the NinjaScript Editor, and use the code generated by ai as more as suggestions and guide than the actual code generated.

Below is a link to a forum thread that discusses ChatGpt and it's limitations.

https://forum.ninjatrader.com/forum/ninjatrader-8/platform-technical-support-aa/1245944-chatgpt-integration-into-ninjascript-code-editor

While it would not be within our support model to help correct problems with these scripts at user request, we would be happy to provide insight for any direct specific inquiries you may have if you would like to create this script yourself. Our support is able to assist with finding resources in our help guide as well as simple examples, and we are happy to assist with guiding you through the debugging process to assist you with understanding unexpected behavior.

You can also contact a professional NinjaScript Consultant who would be eager to create or modify this script at your request or assist you with your script. The NinjaTrader Ecosystem has affiliate contacts who provide educational as well as consulting services. Please let me know if you would like a list of affiliate consultants who would be happy to create this script or any others at your request or provide one on one educational services.

[mcosta72]

Thanks Jesse, I am posting the link for users try this new feature. Still in beta test and inputs are welcome. Of course NT is not involved.

[adeelshahzad]

Thanks a lot mcosta72

Very helpful resource.